New transonic test sections for the NAE 5FTx5FT trisonic wind tunnel

The NAE 5ftx5ft blowdown wind tunnel has undergone a major upgrade of its transonic testing capabilities. Two entirely new test sections, one for testing two-dimensional models (2D) and one for testing three-dimensional models and reflection plane models (3D), have been constructed. The two test sections are parts of the so-called Roll-in Roll...

Recent inmprovements to the NAE 5 ft x 5 ft blowdown wind tunnel

Although the NAE 5 ft X 5 ft Blowdown Wind Tunnel was conceived in the 1950's, with commissioning in 1962/63, it has stood the test of time very well and is still, in 1985, in heavy demand. We may cite three main reasons for this situation: (i) the basic wind tunnel design was fundamentally very sound, (li) the wind tunnel circuit and its...

Information for users of the National Research Council's 5-FT X 5-FT blowdown wind tunnel at the National Aeronautical Establishment

The weld heat affected zone structure and properties of two low carbon Mu-Cr-Mo-V steels

The College of Aeronautics was founded in 1946 and was granted university status in 1969 becoming the Cranfield Institute of Technology. In 1993 it changed its name to Cranfield University.

An investigation of some metallurgical and mechanical properties of titanium-niobium alloys

A study of the hydrothermal synthesis of chrysotile asbestos

A study of the hydrothermal synthesis of chrysotile asbestos ha s been made by investigating reactions in the system MgO - Si02- H20. The effect on the reaction product of varying such parameters as temperature, duration of run, pH and composition of starting materials was examined . This involved identification of the products, using X- ray...

A review of current information on Ti-8A1-1Mo-IV alloy sheet

A review of published data on the Ti-8A1-1Mo-IV alloy is given; data are quoted for tensile strengths, compressive strengths, tensile and compressive moduli, fatigue strength, stability under lead, weldability, static residual strength and susceptibility to hot salt stress corrosion.

Properties of rotating parachutes

Various types of rotating drag devices are described and their properties and ranges of application are indicated. The effectiveness of rotating parachutes, as compared with conventional parachutes and with other autorotating devices, is discussed. Fabric rotating parachutes obtain considerable increase in drag per unit cloth area, mainly owing...

Ballonet kite balloons design, construction and operation

In the development of recent large-scale kite balloon projects much early work on design, construction and use has been uncovered, and confirmed and extended. The Report outlines the principles of design, including ths significance of payload, altitude, wind, speed, air temperature and flight stability. Present methods of construction are...

Calibration of the flow in the Mach 4 working section of the 4ft. x 3ft. High-Supersonic-Speed Wind Tunnel at R.A.E., Bedford

Mach number and flow angle distributions in the working section of the Mach 4 nozzle of the 4 ft x 3 ft High-Supersonic-Speed Wind Tunnel are presented for a range of total pressure and humidity.

1/12-scale model tests of an open circuit VTOL propulsion tunnel. Part I and II

Part I: Selection of and basic testing of a suitable configuration using an external air supply. Part II: Tests with the addition of a Bellmouth intake and driving fan.

A recording technique for kite balloon yaw behaviour and accelerations, and some experimental results

The continued demand for kite balloons as carriers for experimental equipment, and for other purposes, stimulated a study of balloon flight behaviour to improve stability. This note describes methods developed for recording balloon yaw behaviour, and gives results obtained from some experimental balloons. Photography was used to record balloon...

High modulus titanium alloys based on the titanium-boron system

The Young's modulus and strength of titanium were increased by the incorporation of TiB particles in a matrix of alpha, the ductility and impact strength decreasing with increase of boron content. Ternary alloys in the Ti-Al-B system showed interesting properties. A laboratory melt of Ti-7%AL-1.5%B bar alloy had T.S. 74 ton/in², elongation 9%...

Four papers contributed by members of the staff and published on the occasion of the 10th anniversary of its foundation

Thermo-elastic formulae for the analysis of beams / W.S. Hemp Some aspects of turbojet performance calculation at high flight mach numbers / J.R. Palmer The possible use of semiconductor devices in aircraft / D.C. Brown Conduction of heat within a structure subjected to kinetic heating / T. Nonweiler The College of Aeronautics was founded in...

An automatic recording spectrophotometer

The College of Aeronautics was founded in 1946 and was granted university status in 1969 becoming the Cranfield Institute of Technology. In 1993 it changed its name to Cranfield University.

An experimental investigation into some of the problems associated with stress diffusion in the vicinity of chord-wise cut-outs in the wing, and a comparison with existing theories

The College of Aeronautics was founded in 1946 and was granted university status in 1969 becoming the Cranfield Institute of Technology. In 1993 it changed its name to Cranfield University.